Serious question about mysogyny and respect

How come when i hear someone say that they are asexual someone else always have to chime in and threaten to rape them or they say things like "what happens if you get raped" like wtf is wrong with those people ... i feel like they are just jealous of those people bc they themselves cant control their sexual urges and when they see someone who can they get frustrated other than that why tf do people (mainly men) feel the need to threaten raping an asexual ...